Middlings purifier and separator



(No Model.)

E. W. HOWARD.

MIDDLINGS PURIFIER AND..SEPARATOR.

No. 329,168. v 04%, Patentd Oct. 27, 1885.,

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EDWARD WALTER HOWARD, OF MONTEVIDEO, MINNESOTA.

M-IDDLINGS PURBFIERAND SEPARATOR.

SPECIFICATION forming part of Letters Patent No. 329,168, dated October 27, 1885.

Application filed August 4, 1885.

To all whom it may concern.-

Be it known that I, EDWARD WALTER HOWARD, of Montevideo, in the county of Chippewa, and State of Minnesota, have in: vented a new and useful Improvement in Middlings Purifiers and Separators, of which the following is a full, clear, and exact de scription. I

Reference is to be had to the accompanying drawings, forming part of this specification," in which similar letters of reference indicate corresponding parts'in all the figures.

Figure 1 is a plan View, partly in section, of one of my improved middlings purifiers and separators. Fig. 2 is a longitudinal sec tional elevation of the same, taken through the line w m, Fig. 1, part of the fan-casing being shown in elevation and part in section. Fig. 3 is an end elevation of the same, part being broken away.

The invention consists in the construction and combination of various parts of the machine, as will be hereinafter fully described and then claimed.

A represents the frame of the machine.

B is a plate of sheet-iron or other suitable material corrugated longitudinally and placed within the frame A, with a downward inclina- 7 tion toward its tail end. The side edges of the corrugated plate B are attached to side bars, 0, and its head end is attached to a crossbar, D, the ends of which are secured to the side bars, 0, at a little distance from their upper ends. The corrugated plate B is suspended from the frame A by four rods, E, the lower ends of which are pivoted to the side bars, 0, at or near their ends. The upper ends frame A, so that the said corrugated plate can have a longitudinal vibration.

To the cross-bar D, near its ends, are attached the inner ends of two bars, F, the outer ends of which are connected by eccentric-straps or other suitable means with eccentrics G, secured upon the shaft H. The shaft H revolves in bearings I, attached to the head end of the frame A, and upon one end of the said shaft is mounted a fast pulley, J, and a loose pulley, K, to receive a drivingbelt.

Upon the shaft H is also mounted a pulley, L, around which passes a belt, M. The belt Serial No. 173,555. (No model.)

L M also passes arounda pulley, N, placed at right angles with the pulley L and mounted upon the end of the fan-shaft O, which revolves in bearings attached to the top crossbars of the frame A.

Upon the shaft 0 are mounted radial arms P, to which are secured fan-blades Q, which are inclosed by a casing, R, attached to the frame A. The fan Q is made of about the same length as the corrugated plate B, and the disohargespout is so formed and arranged as to discharge the air-blast just aboveone of the side edges of the said plate B and along the whole length of the said plate.

Above the corrugated plate B is placed a plate, S, the side edges of which are bent upward, and are slotted vertically to receive the screws or bolts that fasten the said turned-up edges to the" frame A, so that the said plate can be readily adjusted closer to or farther from the corrugated plate B to regulate the effect of the air-blast.

In an opening in the upper corner of the plate S, next the fan blower, is secured a hopper, T, into which the middlings to be treated are introduced from a spout, U.

With this construction, as the middlings pass through the hopper T, the vibration of the plate B, in connection with the blast of air from the fan-blower, will spread the middlings over the surface of the plate B, and at the same time the said vibration will cause the light fluffy particles and the light fine bran to rise to the surface of the material in the grooves of the said plate, when they will be blown by the air-blast through the space between the plates B S and out at the other side of the machine, while the heavier and more valuable parts of the material will pass down the said groovesand will escape at their lower ends into any desired receiver, the more valuable part of the material being in the groove next the fan-blower, and becoming less valuable in the grooves toward the other side of the machine.

Upon the cross-bar of the frame A, beneath the lower end of the corrugated plate B, are placed angular plates V, to separate the material as it falls from the said lower end of the plate B, so that it can be led into different receptacles and can thus be graded.

One, two, or more of the angular guideplates V can be used, as may be desired, and the said guideplates can be moved along the cross-bar into any desired position.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The combination, with the frame and a driving mechanism, of the inclined vibrating longitudinally-corrugated plate, a verticallyadjustable top plate on the frame and extending over the corrugated plate, and a fan blower arranged to deliver a blast between the side edges of the top plate and corrugated plate transversely of the corrugations, substantially as set forth.

2. In a middlings purifie'randseparator,

the combination, with the frame A, the blastfan, and'the suspended vibrating corrugated plate B, of the adjustable angular guide-plates V, substantially as herein shown and described, whereby the several grades of middlings will be guided into separate receptacles, as set forth.

EDWARD WALTER HOWARD.

Witnesses: I

A. O. VANDEWERKE, GEO. A. WHITMORE. 

